Circuit Analysis

Forum

Topics

Posts

Last post

Vintage Stompbox Corner ( ... - 1975)
Discussion regarding early stompbox technology: 1960-1975 Please keep discussion focused and contribute what info you have...
Topics: 639

639 Topics

14590 Posts

Last post Re: Victory Electronics - Siz…
by gght View the latest post
Today, 03:12
Modern Stompbox Effects (1975 - ...)
All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
Topics: 1412

1412 Topics

21367 Posts

Last post REAGUN DISTORTION traced
by Manfred View the latest post
03 Jul 2020, 13:30
Boutique Stompboxes dissected...
General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
Topics: 1758

1758 Topics

56137 Posts

Last post Re: Analogman - Chorus
by POTL View the latest post
Yesterday, 22:40
DIY Stompbox designs
Stompboxes circuits published in magazines, books or on DIY electronics websites.
Topics: 1052

1052 Topics

10738 Posts

Last post Re: Stereo overdrive
by nonost View the latest post
28 Jun 2020, 17:04

Active topics

Replies

Views

Last post

The great "I'd like to see the guts of" thread

Last post by Cyberjazz1521 « 27 May 2020, 00:20
Replies: 224
by Dirk_Hendrik » 13 Mar 2008, 20:45
1

…

8

9

10

11

12
Rating: 9.96%

Maybe a little optimistic in the title since this thread might drop down in days but I'm going to make it a thread anyway. :mrgreen:

We're here...
224 Replies

340027 Views

Last post by Cyberjazz1521
27 May 2020, 00:20
List of Joyo Pedal Clones

Last post by Pegasus « 28 Dec 2018, 06:19
Replies: 100
by din_mentor » 07 Feb 2012, 12:28
1

2

3

4

5

6
Rating: 12.12%

Hi, totally new to this forum :mrgreen:
I Guess this is THE place for effects pedal questions.

Been looking around for confirmed Joyo pedal clones,...
100 Replies

314546 Views

Last post by Pegasus
28 Dec 2018, 06:19
READ THIS before posting!!

Last post by modman « 11 Sep 2011, 14:52

by modman » 11 Sep 2011, 14:52

Rating: 1.52%

This section is devoted to circuit analysis . This means...

requests for schematics or layouts will be moved the the Request section
messages...

0 Replies

43096 Views

Last post by modman
11 Sep 2011, 14:52
DO NOT post requests in this forum. Pretty please.

Last post by modman « 19 Mar 2010, 10:41
Replies: 2
by culturejam » 22 Nov 2009, 22:18

Pretty please, with sugar on top.

Don't post in this forum asking is there is a schematic or layout or info on XXX pedal.

There is a subforum...

2 Replies

43045 Views

Last post by modman
19 Mar 2010, 10:41
DO NOT post requests in this forum. Pretty please.

Last post by lolbou « 22 Nov 2009, 22:23
Replies: 1
by culturejam » 22 Nov 2009, 22:18

Pretty please, with sugar on top.

Don't post in this forum asking is there is a schematic or layout or info on XXX pedal.

There is a subforum...

1 Replies

40599 Views

Last post by lolbou
22 Nov 2009, 22:23
DO NOT post requests or debugging in this forum. please.

Last post by lolbou « 22 Nov 2009, 22:23
Replies: 1
by culturejam » 22 Nov 2009, 22:18

Pretty please, with sugar on top.

Don't post in this forum asking is there is a schematic or layout or info on XXX pedal.

There is a subforum...

1 Replies

53111 Views

Last post by lolbou
22 Nov 2009, 22:23
The Goose, the Middleman, the Idolmaker and Gomer Pyle

Last post by noelgrassy « 01 Feb 2008, 20:42
Replies: 91
by CS Jones » 07 Dec 2007, 22:41
1

2

3

4

5
Rating: 0.22%

Clay, I would really love to hear the full story on this one. It seems like you have lots to tell!

Thanks LPD. How much do you want to hear? The...
91 Replies

164196 Views

Last post by noelgrassy
01 Feb 2008, 20:42
Victory Electronics - Sizzle Tone

Last post by gght « Today, 03:12
Replies: 2
by modman » 03 Jul 2020, 09:25

this was posted in a facebook group, no info, no source.

Usual Google Fu nah work -- not even a picture of the unit. But there is a lot of info to...

2 Replies

146 Views

Last post by gght
Today, 03:12
Analogman - Chorus

Last post by POTL « Yesterday, 22:40
Replies: 25
by junkwork » 14 Oct 2007, 18:47
1

2
Anyone has schematics or information of modified points?
I heard that Bi Chorus composed with one PCB and two 3PDT foot switches...how switch two...
25 Replies

4936 Views

Last post by POTL
Yesterday, 22:40
Mad Professor - Simble

Last post by rtcustom « Yesterday, 19:45
Replies: 56
by ipm » 27 May 2014, 22:36
1

2

3
Rating: 14.29%

Anyone?
I would really like to know what is it all about!
56 Replies

23621 Views

Last post by rtcustom
Yesterday, 19:45
REAGUN DISTORTION traced

Last post by Manfred « 03 Jul 2020, 13:30

by Manfred » 03 Jul 2020, 13:30

Rating: 0.22%

While cleaning up I found this incomplete Reagun Distortion that I bought years ago.
Anyway, now I have traced it.
Here the PCB layout and the...

0 Replies

133 Views

Last post by Manfred
03 Jul 2020, 13:30
Fender - Yngwie Malmsteen Overdrive

Last post by andshadows « 03 Jul 2020, 11:55
Replies: 12
by kaya112 » 24 May 2015, 11:00

Rating: 1.73%

... cessories/

You suppose it's a red OD250?

12 Replies

7648 Views

Last post by andshadows
03 Jul 2020, 11:55
Dynacord Federhall 1960

Last post by vintagekiki « 02 Jul 2020, 22:35
Replies: 2
by borislavgajic » 30 Jun 2018, 20:58

please does someone have schematic for this spring reverb...?

2 Replies

1911 Views

Last post by vintagekiki
02 Jul 2020, 22:35
Whisper of Screams (Kasha OD Pedal Trace)

Last post by toneman « 02 Jul 2020, 17:10
Replies: 8
by Cybercow » 09 Jun 2020, 19:20

Rating: 2.38%

For your breadboarding pleasure . . . .

I give you the W hisper of Screams - a trace of the Kasha OD Guitar pedal. One of the best, oddest, yet...

8 Replies

736 Views

Last post by toneman
02 Jul 2020, 17:10
Dunwich Olde Dirty Bass

Last post by DarkHorse « 02 Jul 2020, 00:01

by DarkHorse » 02 Jul 2020, 00:01

Rating: 0.22%

Just a gut shot I found online, preserved till maybe more info can be gathered.

0 Replies

118 Views

Last post by DarkHorse
02 Jul 2020, 00:01
Xotic - AC Booster [ goop-alarm ]

Last post by alexradium « 30 Jun 2020, 06:33
Replies: 129
by The Rotagilla » 03 Sep 2007, 22:03
1

…

3

4

5

6

7
Rating: 2.6%

My first contribution...I'm so giddy!

More pics. Not the best but you can still see what's going on.
Pic 1
Pic 2
Pic 3
Pic 4
Pic 5
129 Replies

37075 Views

Last post by alexradium
30 Jun 2020, 06:33
Tech21 - Character Series.

Last post by daeg « 30 Jun 2020, 01:52
Replies: 434
by bucksears » 10 Jul 2009, 16:28
1

…

18

19

20

21

22
Rating: 24.89%

I'm half tempted to get a Liverpool just to see what's inside, but if someone has already had a look, I'd be interested to hear it.
Supposedly, some...
434 Replies

235007 Views

Last post by daeg
30 Jun 2020, 01:52
K&K - Pure XLR Preamp

Last post by marshmellow « 29 Jun 2020, 19:17
Replies: 4
by Bononoob » 25 Jun 2020, 22:53

Rating: 1.95%

I have this Preamp because someone wants me to modify it. So I traced it
K&K makes preamps and mics for acoustic guitars, it's a nice and simple...

4 Replies

370 Views

Last post by marshmellow
29 Jun 2020, 19:17
MSA pedal steel guitar fuzz module

Last post by Rambozo96 « 29 Jun 2020, 15:08
Replies: 3
by jreeves47 » 19 Jun 2020, 01:57

Rating: 2.16%

These were installed on some MSA brand pedal steel guitars in the 1970's
Not my pic, from this thread -

3 Replies

492 Views

Last post by Rambozo96
29 Jun 2020, 15:08
EHX - Micro Synth XO Version

Last post by puppiesonacid « 29 Jun 2020, 00:03
Replies: 101
by beavis » 09 Sep 2008, 22:58
1

2

3

4

5

6
Rating: 6.93%

Interesting in that it uses 9 volts. All SMD.

Shots:

biggie version:

biggie version:

biggie version:

biggie version:

biggie...
101 Replies

49413 Views

Last post by puppiesonacid
29 Jun 2020, 00:03
Stereo overdrive

Last post by nonost « 28 Jun 2020, 17:04
Replies: 15
by nonost » 05 Jun 2020, 01:08

Rating: 0.65%

Hi. I want to build a stereo overdrive: 2 INs & 2 OUTs.

I thought about making two identical boards, dual pots and 4pdt footswitches. But it looks...

15 Replies

744 Views

Last post by nonost
28 Jun 2020, 17:04
Bernard Raunig - Tube Pre Amp

Last post by modman « 28 Jun 2020, 13:02

by modman » 28 Jun 2020, 13:02

Rating: 0.43%

83569264_10156919208691707_8594595846472130556_o.jpg
105977241_10156921274011707_5289649324895385589_n.jpg

0 Replies

175 Views

Last post by modman
28 Jun 2020, 13:02
Boss - FZ-3 Fuzz

Last post by koeda « 27 Jun 2020, 17:24
Replies: 30
by nokaster » 12 Oct 2007, 08:27
1

2
Rating: 0.65%

i'm wondering if there are any schematics or layouts for the boss FZ-3 around?
i couldn't find any...

also, where would you classify the FZ-3 within...
30 Replies

30323 Views

Last post by koeda
27 Jun 2020, 17:24
What are the purpose of multiple transistors ?????

Last post by mictester « 27 Jun 2020, 16:47
Replies: 4
by SYK0T3K » 27 Jun 2020, 01:05

Rating: 0.65%

Hello Guys :D !! I am really excited that I found this awesome forum and helpful community, as I am starting to build my first pedal, which is a...

4 Replies

252 Views

Last post by mictester
27 Jun 2020, 16:47
Xotic - Bass RC Booster

Last post by aionios « 26 Jun 2020, 21:25

by aionios » 26 Jun 2020, 21:25

Rating: 1.52%

I couldn't find any record of anyone cracking open a Bass RC Booster, so I did one along with the AC and RC traces. (They all share the same PCB, so...

0 Replies

185 Views

Last post by aionios
26 Jun 2020, 21:25

Return to Board Index